The gas , which is sulphur - free , contains 89 - 99 % methane, up to 6 % ethane, and 3 % propane.

天然气不含硫, 含甲烷88-99%, 乙烷6%和丙烷3%.

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Phenyl ( or polyphenyl ) substituted epoxides serve as excellent precursors to phenyl ( or diphenyl ) carbenes.

某些苯代 ( 或多苯 ) 环氧乙烷是制取带苯环 ( 或二苯 ) 碳烯的极好原料.

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Great quantities of cooling water must be available for condensation of the ethylchloride.

为了凝结氯乙烷气体,必须使用大量的冷却水.

辞典例句

The cloud might be snowing ethane snowflakes into methane lakes below.

云层可能正在向下面的甲烷湖飘落乙烷雪.

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And ethylene natural rubber and polymer materials for UV inks and finish.

而天然橡胶和撮不合乙烷材质不不合用UV油墨和上平油.

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Sterilization by use of ethylene oxide is sometimes attempted for powders.

使用环氧乙烷灭菌,有时会使用粉末灭菌剂.

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However, these were incapable of being inactivated ethylene oxide as stated previously.

不过如前所述, 这些孢子也无法被环氧乙烷灭活.

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BA 110 ethane pyrolysis furnace is an important equipment of ethylene plant.

BA110乙烷裂解炉是乙烯装置的重要设备.

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The article describes the physico - chemical properties, operative standers and laws of EDC.

简述了二氯乙烷的理化性质 、 作业标准和法规.

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In the reaction of acetylation and nitration 1,2 ? dichloroethane was used as solvent.

在乙酰化、硝化反应中引入了1,2-二氯乙烷溶剂.

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They are acrylaldehyde hydration, ethylene oxide formylation and biological zymolysis methods.

即丙烯醛水合法, 环氧乙烷甲酰化法,生物发酵法.

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Objective To discuss the X - ray pulmonary changes inwithaspiration of trichloroethane.

目的探讨吸入三氯乙烷后肺部的 X 线改变.

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Other components are the homologous alkanes, ethane, propane, higher hydrocarbons.

其他组分有同系烷 、 乙烷 、 丙烷以及高分子碳氢化合物.

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Other components are the homologous alkanes, ethane, propane, and higher hydrocarbons.

其他组分有同系烷 、 乙烷 、 丙烷和高分子碳氢化合物.

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Advances in ethane dehydrogenation to ethene have been reviewed.

乙烷脱氢制乙烯是乙烷利用的有效途径.

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